Color

#284658

#284658
hex#284658
rgbrgb(40, 70, 88)
hslhsl(203, 38%, 25%)
oklchoklch(0.379 0.047 236.2)
Closest name: Charcoal (#36454f)Relative luminance 0.0554

Colors that go with #284658

Royal Blue, Teal and Sienna lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#583a28

#285852 · #282d58

#582845 · #455828

Split-complementary

Open in tool →

#58282d · #585228

#522858 · #583a28 · #2d5828

Contrast

#284658 as textRatioAAAA largeAAAFix
Aaon white
9.97:1passpasspassPasses AAA — no fix needed.
Aaon black
2.11:1failfailfail
  • AA: use #467a9b as the text (4.52:1)
  • AAA: use #6b9dbd as the text (7.18:1)
  • AA: or shift the background to #b0b0b0 (4.6:1)
  • AAA: or shift the background to #d9d9d9 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #284658 as the background.

Brands using this color

Fonts for this mood

#284658 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #284658
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #284658 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/284658-9cb0c4-df4e5d-1f222d-e9f1f0?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md